在乳房切除术后的放射治疗中,玻尿酸厚度和固定化面具使用的剂量测量影响:基于胸壁厚度的分析
Qing-Jun Shang1, Meng Zhang1, Bing-Xin Zhao1
1Department of Radiation Oncology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.
Frontiers in oncology
|February 5, 2026
概括
热塑性口罩和玻尿酸显著影响乳腺切除术后放射治疗 (PMRT) 的剂量. 根据胸壁厚度对它们的个性化使用优化了目标覆盖率和危险器官节省.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
- 乳腺癌治疗方法 乳腺癌治疗方法
背景情况:
- 乳房切除术后的放射治疗 (PMRT) 需要平衡目标覆盖率与危险器官 (OAR) 节省.
- 在PMRT中,热塑性口罩和玻尿酸的临床使用是常见的,但它们的联合剂量测量影响和对胸壁厚度的依赖性尚未完全理解.
研究的目的:
- 在PMRT中研究热塑性面罩和不同厚度的玻璃杯的联合剂量效应.
- 为了评估胸壁厚度对这些剂量测量结果的影响.
主要方法:
- 对接受PMRT的17名乳腺癌患者的回顾性分析.
- 每个患者生成六个强度调节放射治疗 (IMRT) 计划,不同的面具存在和球体厚度 (0,3,5毫米).
- 对皮肤,规划目标体积 (PTV),OAR和治疗效率 (MU) 的剂量参数进行比较,并根据胸壁厚度对子组进行分析.
主要成果:
- 玻尿酸应用改善了PTV覆盖和肺部节省,但增加了皮肤剂量.
- 热塑性面具提高了皮肤剂量,作为无意的补偿剂.
- 胸壁厚度与皮肤剂量,肺部暴露和MU负相关;较薄的胸壁受益最多.
结论:
- 无论是面具还是玻尿酸,都会显著改变PMRT剂量.
- 玻尿酸增强PTV覆盖和肺节省,以牺牲皮肤剂量为代价;口罩作为补偿剂.
- 胸壁厚度是一个关键因素,支持个性化使用口罩和玻尿酸,特别是对于胸壁较薄的患者.
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